Pulp-classifier.



UNITED STATES PATE ALFRED (i. KIPJJY, Ol" GLDFIELD, NEVADA;

PULP-CLASSIFIER.

'T o all ielmm it. -may concern:

Be it known that I, ALFRED G. Knmr, citizen of United States, residing at Goldfield, in the county of Esmeralda und State of Nevada; have invented new und useful lub irovcincuts in Puf i-(hissifici's, of which t-lie ollowing is a speci icntion'. i

.\l invention' rchitcs to that type of inining a )parut-ns generally known as' pulp classi iers'.'

'lhc object of thc invcntioiiis to provide' a classifier adapte-d to all sizes of pio lucl', and which :apparatus shall bc. simple and practical, und of large capucity; and to provide a clasv fier which shrill be adjustable for various kinds of work; which Ishall he uniforni in operation; which ill not clog'up or necessitate the periodical cinptving nud startingr of the classifier-anew; and in' which the hydrostatic head of the soitir'igf'coluinn is reduced to :1 minimum.

T hc invention consists of the parts and the construction and combination of parts as hereinafter iixorcfully described and cluiuiech hnvin'g reference to the iu.coiiipuii)'ing drawings, in which- Figure 1 isc lonfit-udinal sectional View' of the invention. lig. .2 is u transverse sectional View. Fig; 3 a plan View.

The classifier proper-comprises a tank or outer casing inclosing a wedge-shaped deflcetor L. This deflector l is of any suitahle size and material, und is slidablc iu guides 3 in the outer cusing or t-unk A to permit the deflector being moved'vci'ticullv; the vertical isition of thc deflector hciiig regu- ,latcd y suilalilc means, as the sct screws 5. according to the character of t-lie material undergoing treatment.. The tank A has its hack and front portions or sides purallcl with the inclined conve-.riant sides of the dcflcctor 2, and the lower end of the ti'ink is in open communication with a narrow hopper having arallel sides and inclined ends 7 conver ing to a central outlet in the bottoni of' the iopper, :and which outlet opens int-o the sorting column or pipe 8. This sorting culuiiiii is 'of any desired length and size, and has a, flspgeii at its lower end to which is hinged a swinging gute or valve 10, hmnv an o citing for the insertion of a plug 11 or Specification of Lettera If'atent. Appiicuion meti nbnwy u, um. sii-m mi. woo.

suits lc size, through whichthe sand or;

underflow product is discharged. The de Hector 2 has s tubular column 12 extending verticlly and centrally throu h it, and this column 12 is in axial lino with lie sorting coldown into the .NTOFFICE. f

ratsam A1354, weer umn V8. l2' am braces for Asupport-ing the.

up er end of the tube l2.

assing'thmugh thc tube 12 is a water. l

pipe )3 connected to any' suitable supply of clear writer under pressure hy u hose 14 and vulve l5. This deur water pipe -13 extends i.

down ythrough she hopper, and near to the ,hott om of t c sorting-column 8. Its lower end is closed h r a cup -16,` und t-licpipc is per foratcd at 1T in its lower' extremity within thc sorting celu-em.

The pulp or other material to he treated flows froni'a rx-.rroir or tank 18 through a valved outlet lil into n. launder 20, and thence over a iiahle'distributing board 21 and through :he screen 22 into the. coutractcd space 23 l'ietwecn the. back of the tank A. and the adjacent inclined Wall of the deflector 2. Frein the passage 23 the slimes and water pmx into the hopper, the sands and heavier svi passing downinto the sort.- in'g column, arr.. let 1 1; the lighter ganglio und lwaste material, with the surplus water, passing up on the other sideY of :he wedgeshaped deflcctor through tl.: contracted o iciiing-24, and discharging into the trough .5. The wedge do. flcctor can be moved up and down. so as to inreaseor decrease the velocitv of the pul i'of crushed ore passing through the clessiier, according as the sand or underflow discharged through 11 may cont-ain more or A less fine product. or the overflowr into trough 25 contain more. or less coarse product-.

By having the spaces .Q3-2L equalthrough the high clocity in the opper and;

sorting column. and too heayy togo out with the mimi-num velocity through the overflow passage 2- It is quite common in classifiers' now in use, for fthese e-:cuiiiulations of tino sandte fall as a uniss- Rocking the classifier and ne ccssitritingy the periodical empl-ying and starting o. the rlaifier anew.

In this apparsus the hydrostatic heed on the'sorting cefiunm 8 'is reduced to a minimuni. and en sinies or fines that may ro ring column have only to curri-i hack 4 to t thence schurgcd with the overflow water sind sinsisc. the ent-rance of opening 24:,l

Y I claim and desire to H aving thus described my invention, what secure by Letters Pat'- ent isl l. A classifier having in combination n casing provided with convergent sides, a narrow hopper at the bottom of said casing l and communicating therewith, a sorting 5 column forming a continuation of the bottom i of the hop er, a wedge-shaped deector in .l the casing mving its sides substantially parallel with the inner sides of casing and separated from the latter to form a. sinuous passage for the pulp undergoingclassicntion, and awnter Supplypnssingthrough the deflector and hopper ant. into the sorting'colunln.

2. A classifier having n casing 'with convergent sides and a narrow hopper extension from the'bottom thereof, a sorting column formingr a continuation of the hopper, a deector having a tubular column, and a. watersupply pi e' passing through said tubular column and o 3. In a c assifier, the combina-tion of an outer casing havin convergent sides, a narrow hopper at the ottoni of the casino und communicating therewith, a sorting co umn beneath the hop 3er, said sorting column having a valved out in the casing forming sinuous passages For the pulp undergoing classification, and a clear water .-ipe discharging,r into the sorting column, said` clear water pipe Anssing down through said wedUe-shnped de eetor.

In testimony whereof I have hereunto sel.y

1y hand in presence of two subscribing witnesses.

ALFRED G. KIRBY. Witnesses:`

CHESTER L. LYMAN, J. E. GRA-Nr.

per and into Lne sorting column.'

et, a wedge-shaped deflect-or i aio K 

